Improvement in stoppers for ladles



FRANCIS A. OSTRANDER.

Improvement in Stoppers for Ladies Patented August 8, 1871.

PATENT CEFIGE.

FRANCIS A. OSTRANDER, OF TROY, NEW YORK.

IMPROVEMENT IN STOPPERS FOR LADLES.

Specification forming part of Letters Patent No. 117,918, dated August 8, 1871.

To all whom it mag concern:

Be it known that I, FRANGIS A. OSTRANDER, of Troy, in the county of Rensselacr and State of New York, have invented a new and useful Improvement in Ladle-Stoppers, of which the following is a full and clear description, which will enable others skilled in the art to which this invention pertains to understand and construct the same, reference being had to the accompanying drawing making a part of this specification, in which I Figure 1 represents a central vertical section of a ladle such as is used for containing large quantities of molten metal, and from which the same is poured through a nozzle in the bottom thereof, and in which is embodied my invention, showing the application of the same. Figs. 2,4, and 6 are top or plan views of various modifications of my invention on a-larger scale than shown in A, Fig. 1. Figs. 3, 5, and 7 represent central sections of Figs. 2, 4, and 6,1'espectively, as taken in a plane through the line a; a. Fig. 8 is a vertical elevation of the lower end of the lifting-bar Fig. 1, to which the modifications of my invention, as shown in Figs. 2 and 3, or 4 and 5, is attached when in use. Fig. 9 is an end or plan view of the liftingbar shown in Fig. 8. Fig. 10 is a vertical elevation of the lower end of the lit'tin gbar or rod to which the modification of my invention, as shown in Figs. 6 and 7 is attached when in use. Fig. 11 is an end or plan view of the lifting-rod or bar shown in Fig. 10.

Like characters refer to corresponding parts in the various figures.

My invention consists in the construction of the ladle-stopper A, (see Fig. 1,) as hereinafter more fully described.

In the stopper A, which is made of fire-clay or other suitable material, is formed the orifice .or hole a, having one or more grooves, 1), running longitudinally therewith and terminating at or near the bottom in one or more recesses, 0. At or near the lower extremity of the lifting-rod or bar B is formed one or more lugs or projections,

d, in such a manner that by inserting the sameor other suitable material the stopper A cannot be detached from the rod B without being broken therefrom. The orifice or hole a, with the 4 groove or grooves b and recess or recesses 0, may be made of any suitable size or shape substantially the same as in the modifications shown in the various figures. The rod or bar B, with the stopper A, attached as herein described, is protected from being melted while submerged in the liquid metal by a coating (B, Fig. 1) of fire-clay or other suitable material thereon. By raising or lowering the rod B with the stopper A thereto attached, and protected by the coating 6 as described, the quantity of molten metal flowing through the nozzle 0 in the bottom of the ladle is regulated.

Though my invention is designed to be used in pouring large quantities of any kind of molten metal it is particularly adapted to pouring Bessemer steel.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, 1s-- 1. The stopper A, in which is formed the orifice or hole to having one or more grooves, b, and one or more recesses c, substantially as and for the purpose shown and described.

2. The manner of attaching the stopper A to the lifting-rod or bar B that by grouting the space in the orifice or hole a the stopper A is prevented from becoming detached therefrom while in use, substantially as herein set forth.

The above specification signed by me this 17th day of June, 1871.

F. A. OSTRANDER.

Witnesses J. K. LONG, J. T. GOODFELLOW. 

